Fix Travis CI integration (#575)

Author: webflo

.travis.yml

@@ -1,5 +1,5 @@
 language: php
-dist: trusty
+dist: bionic
 sudo: false
 
 php:
@@ -8,6 +8,7 @@ php:
 
 env:
   global:
+    - COMPOSER_MEMORY_LIMIT=-1
     - SIMPLETEST_DB=sqlite://tmp/site.sqlite
     - SIMPLETEST_BASE_URL="http://127.0.0.1:8080"
   matrix:
@@ -16,6 +17,10 @@ env:
     - RELEASE=stable COMPOSER_CHANNEL=snapshot
 
 before_install:
+  # https://www.drupal.org/project/drupal/issues/3107155
+  - sudo echo "deb http://archive.ubuntu.com/ubuntu focal main restricted universe multiverse" >> /etc/apt/sources.list
+  - sudo apt-get update
+  - sudo apt-get -y install sqlite3/focal
   - echo 'sendmail_path = /bin/true' >> ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/travis.ini
   - phpenv config-rm xdebug.ini
   - composer --verbose self-update --$COMPOSER_CHANNEL
@@ -32,6 +37,5 @@ script:
   - ./vendor/bin/drush runserver $SIMPLETEST_BASE_URL &
   - until curl -s $SIMPLETEST_BASE_URL; do true; done > /dev/null
   # Run a single unit test to verfiy the testing setup.
-  - ./vendor/bin/phpunit -c ./web/core ./web/core/modules/system/tests/src/Unit/SystemRequirementsTest.php
+  - ./vendor/bin/phpunit -c ./web/core ./web/core/modules/user/tests/src/Unit/UserAccessControlHandlerTest.php
   - ./vendor/bin/drush
-  - if [[ $RELEASE = stable ]]; then ./vendor/bin/drupal; fi;